A very well respected engineer in our state had his own small Electrical Engineering firm that did not cary E&O insurance, (so he claimed). His home was in his wife's name and they had few other assets.
Several times he was approached by lawyers for clients looking to sue him for some perceived design issue. He provided the lawyers his net worth information and never heard from them again. Without insurance, he was not worth the lawyer's time.
I think he was just lucky.
Does having insurance make an engineer a bigger target for suit happy lawyers?